PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-01:57:50
G10     255.6          30.7               13.1 +/-    1.00      22.7 +/-    1.00  0.050 / 0.060
G13     48.8           26.5                8.8 +/-    0.59      16.6 +/-    0.59  0.040 / 0.050
G15     77.7           56.9                9.9 +/-    0.54      11.5 +/-    0.54  0.160 / 0.490
G16     288.8          15.2                7.9 +/-    1.63      19.6 +/-    1.63  0.160 / 0.460
G20     272.5          48.9               11.9 +/-    1.16      15.2 +/-    1.16  0.100 / 0.120
G21     340.0          63.6                9.8 +/-    0.36      10.8 +/-    0.36  0.110 / 0.110
G26     261.1          13.2               12.2 +/-    3.00      31.7 +/-    3.00  0.040 / 0.060
G29     166.6          44.5               12.2 +/-    1.02      16.6 +/-    1.02  0.030 / 0.050